13" x 17.5" Gold Metallic Bubble Mailers Padded Self Seal Mailing Envelopes Pack of 100 Usable Dimensions: 12" x 17.25". Color: Gold, Paper Liner: White. Provides excellent protection during shipments. Aluminum Foil with Bubble Lining, Bubble Lining: 3/16. Approved by UPS, FedEx, and USPS.